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Status:

PROPOSED STANDARD

Updates:

RFC 4821,RFC 4960,RFC 6951,RFC 8085,RFC 8261

Authors:

G. Fairhurst
T. Jones
M. Tüxen
I. Rüngeler
T. Völker

Stream:

IETF

Source:

tsvwg (wit)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC8899

Discuss this RFC: Send questions or comments to the mailing listtsvwg@ietf.org

Other actions:Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 8899

Abstract

This document specifies Datagram Packetization Layer Path MTUDiscovery (DPLPMTUD). This is a robust method for Path MTU Discovery(PMTUD) for datagram Packetization Layers (PLs). It allows a PL, or adatagram application that uses a PL, to discover whether a networkpath can support the current size of datagram. This can be used todetect and reduce the message size when a sender encounters a packetblack hole. It can also probe a network path to discover whether themaximum packet size can be increased. This provides functionalityfor datagram transports that is equivalent to the PLPMTUDspecification for TCP, specified in RFC 4821, which it updates. Italso updates the UDP Usage Guidelines to refer to this method for usewith UDP datagrams and updates SCTP.

The document provides implementation notes for incorporating DatagramPMTUD into IETF datagram transports or applications that use datagramtransports.

This specification updates RFC 4960, RFC 4821, RFC 6951, RFC 8085,and RFC 8261.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.